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Finding the Fourth Proportional to 84,881.73, 127,128.83 and 40,539.72

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Solution

The fourth proportional to 84,881.73, 127,128.83 and 40,539.72 is: 60,717.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,881.73 : 127,128.83 = 40,539.72 : x
  2. Step 2: Convert to fraction form
    84,881.73/127,128.83 = 40,539.72/x
  3. Step 3: Cross multiply
    84,881.73x = 127,128.83 × 40,539.72
  4. Step 4: Simplify right side
    84,881.73x = 5,153,766,969.43
  5. Step 5: Solve for x
    x = 5,153,766,969.43/84,881.73
  6. Step 6: Final answer
    x = 60,717.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.